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Figure 5


Fig. 5. Hemoglobin concentrations of tadpole shrimp reared under normoxic (19–21 kPa O2) (open bars) conditions and then switched as adults to severe hypoxic (1–3 kPa O2) conditions for 5, 7 or 10 days. Black bars indicate animals reared under severe hypoxic conditions and switched as adults to normoxic conditions for 5, 7 or 10 days. Day 0 is prior to switch. Values are means ± s.e.m. (N≥7). Significance is assumed at the level of P<0.05: asignificant difference from normoxic animals at the same day; bsignificant difference within rearing groups from the values at day 0.